Cyclometer



2 Sheets-Sheet l,

(Model.)

P. E. MGDONNELL.

GYGLOMETER.

Patented Peb. 7,1882.

N. PETERS. Phew-Lmwgmphr. wnshmgmn, D. C.

(Model.) 2 Sheets-Sheet. 2.

P. E. MGDONNELL.

CYGLOMETBR.

No. 253,481. Y Patented Feb. 7,1882.

WTNEEEEE@ UNITED STATES PATENT OFFICE.

TO vBERNARD Meh/IA NUS,

OF CHICAGO, ILLINOIS.

CYC LOM ETE R.

SPECIFICATION forming part of Letters Patent No. 253,481, dated February'7, 1882.

' Application filed November 22, 1880. (Model.)

To all Iwhom it may concern Be it known that I, PATRICK ENEAs MeDoN-NELL, of Lawndale, in the city ofChica-go, State of Illinois, haveinvented an Improved Odometer and Register, of which the following is aspecication.

The invention relates to improvements in machines for registering thenumber of revolutions in machinery or of miles for land convey ances.

rlhe object of my invention is to actuate a dial or a series of dialsfor recording the number of revolutions either in tens, hundreds,thousands, millions, or as high in the scale of numerals as may berequired, or to register the number of revolutions either in miles forland couveyances, in gallons for water-meters, and in feet forgas-meters, as the case may be, with the fewest parts and least frictionpossible, and have it sealed up, so that it cannot be tampered with orthat water or dust may not get into it. I attain these objects by themechanism illus- ,trated in the accompanying drawings, which representone for buggies and carriages and one for railroad-cars, in which-VFigure l represents a full-sized view of an odometer for buggies andcarriages as fastened to the hub of a buggy-wheel by screws s s, withthecover c swung back to the right on a pivot, a, that is rigid to lidl. When it is not necessary to see the numbers on the dials, (which inthis instance show seven hundred and eighty miles,) the cover c is movedto the left, completely covering'the entire face, and retained in thatposition by any suitable means. Fig. 2 represen ts it with the lid l,cover c, and shank k removed. The dial D is divided by one hundred dots,each representing one mile, with every fth mile numbered, beginning at5. The dial cl is numbered from l to l0, and makes one revolutionV everytime the dial D makes ten. Fig. 3 shows the back of dial D, p being apin that meshes in the slot o in wheel f, Fig. 4. Fig. 4 shows Fig. 2with the dials D d and small wheel t' removed. Fig. 5 shows Fig. 4 withWheelf and slotted eccentric t removed. Fig. 6 shows Fig. 5 with wheelsgj and slotted eccentric e removed. Fig. 7 is a sectional View ofFig. 1. Fig. 8 represents a half-sized view ofan odometer l'orrailroad-cars. 5o Fig. 9 is a back view of Fig. S, with the lid Lremoved. Fig. l() is asectional view ofFigS. Fig. 1'1 represents one ot'the dials in Fig. 8, of which there are three, graded in size as shownin the eye-piece A, Fig. 8, and numbered from l to 100, with a cipherplaced before the single digits and the unit removed from 100. Fig. 12shows how the odometer, Fig. S, is attached to a car-axle by a clasp andworm.

C, Figs. 6 and 7, is a case with thirty-ve 6o cogs on its inside. Thewheels f gj, Figs. 4, 5, 7, have thirty-four cogs each. On the centerpin, I, Fig. 7, hangs a weight, zo, Fig. 6, having an eccentric, e, alsohanging on the pin P, but rigid to to. e fills the hole in the center ofwheelj. By placing the wheel j on the eccentric c it will be in meshwith the cogs in the case C direct with the stroke of said eccentric. Ifthe case C is rotated to the left one revolution, the weight w, beingretained at the botv7o tom by its own gravity, causes the wheel j tomesh with the thirty-tive cogs in the case C, thus making it go one cogmore than its revolution, so that when the case C makes thirtyfourrevolutions the. wheel j will make thirtyfive, or one entire revolutionin the case. Vheel j has a pin or shoulder, a, that meshes in theslotted eccentric o, Figs. 5 and 7, giving itthe same number ofrevolutions with itself'. e fills the hole in the center of wheel g andmeshes Se it with the case the same as wheelj is meshed by eccentric e.The eccentrics t v c rotate on the center pin, P, and all have the samestroke; but t is twice the distance ofthe stroke larger than v, and ebears the same relation to e. This 8 5 is necessary to allow thewheelsj'j g to make the rotary reciprocating movement required to meshthem with the case C at different periods, and not have the pins yand/a, Figs. 4, 5, and 7, come in contact with the next eccentric. 9oWhen the eccentric e and W'lreel] gain one rotation on the case C wheel'g gains one cog, so the case C must make thirty-four times thirtyfour,or one thousand one hundred and ftysix, revolutions to cause the wheel gto gain one revolution. The wheel g has a pin, o, that meshes in theslotted eccentric t, Fig. 4, controlling it the same as j controls e,with the same result. Thus .the ease C must make the cube ot' 34, orthirty-nine thousand three hundred and tour revolutions, to cause thewheel f to gain one, this being about the number of times a buggy-wheelof the ordinary size rotates in passing over one hundred miles, or393.04 in one mile. The wheel j' rotates the dialD with itself, pin pand slot o being meshed, and carries the dots and figures under thepointer shown at S0, Fig. 1. The dial d has ten internal cogs, that meshwith the wheel t', having nine external cogs. The wheel yi is placed onthe center pin, P, and retained from rotation by a pin or shoulder, m,Fig. 7, pro- `ieeling into the lid I. On the dial D, Fig. 2, are twoshoulders, a u, that keep the dial d in mesh with the wheel i. lVhendial D makes one revolution it meshes dial d with the nine cogs on wheelt, thereby carrying said dial ahead one cog, and showing another numberunder the eye-piece in lid l, Fig. l. A piece of mica the size of lidlis placed against its under side, and the mica and lid hermeticallysealed tothe case C, thus making` it water and dust proof, and so thatit cannot easily be tampered with. As the weight to is the motive power,all that is required is to rotate the odometer to cause it to register.

Another important feature in my invention is that the wheels and dialsrotatein the same direction when the odometer is turned tothe right thatthey do when it is turned to the left. I accomplish this by the pawl q,attached to the weighted eccentric e zu, in connection with thei'ourratehets o', Fig. 6. I have previously stated that byturning thecascO to the left the weight te will remain at the bottom, therebyTfurnishing the power to drive the wheels and dials. If the case Gisrevolved to the right, the pawl q, falling by its own weight, meshes inone of the ratchets, as seen in the drawings, and prevents the weight aifrom remaining at the bottom, but instead lifts it up to the top andallows it to fall over, moving in the same direction as if rotated tothe left, and catches in the opposite ratchet, making onehalf-revolution for every one half-revolution made by the case C. Thiswill be more readily understood by viewing Fig. 6 inverted.

In the odometer for railroad-cars I register one million of miles as thehighest number with three dials, 190,544 being shown in the eye-piece A,Fig. 8.- I accomplish this by having one hundred and one cegs in thecase G, Figs. 9v and l0, and one hundred cogs in each ot' three wheelsthat mesh with the case, and which I will designate Nos. 1, 2, 3, FiO'.10. There -is also a wheel, No. 4, with ninety-eight cogs, that meshwith the one hundred and one cogs in the case, which I will describemore deiinitely hereinafter. It is required to have three differentsizes, as shown in Fig. 10, so that the numbers on each dial may be seenthrough the eye-piece A.

In Fig. 9 it will be seen that there are but abouttwentycogsinthecase.Thisismerelyto facilitate the manufacture, as the proper space Yis therefor one hundred and one. The wheels Nos. 1, 2, 3, each having onehundred cogs, when meshed the entire circumference of the case Gr, gainone coe. They are meshed by eceentrics, same as the one't'or the buggythatI havejustdescribed, each wheel governing the next by an eccentric,the only difference being that I place a dial on each wheel marked byone hundred numbers, Fig. 11, and it being between the wheel and thenext eccentric, the wheel moves the dial by a shoulder and slot, and thedial moves the eccentric. (See Fig. 10.) Each cog gained on wheel No. 1represents one mile, each cog gained 011 wheel No. 2 represents onehundred times that ot' wheel No. 1, and each cog gained on wheel No. 3represents one hundred times that of wheel No. 2, or the cube of 100 asthe greatest number.

It will be understood that there will be nothing gained on the dial ofwheel No. 2 until wheel No. 1 gains at least eighty cogs, the reason forthis being that the dials rotate on the center pin, P, Fig. 10, and thewheels being moved by eccentrics make a rotary reciprocating motion, andhave to make nearly twice the distance ot' the stroke before they movethe dial perceptibly. So it is while the wheels Nos. 1 and 2 are movingfrom numbers S0 to 100 that the next dials are moved one number.

I now come to wheel No. ll, which I make with ninety-eight cogs in thepresent instance. This wheel is governed by the weighted eccentric w,Fie". 10, and, as it gains three cogs for every revolution of the caseGr, it requires thirty-two and two-thirds revolutions of the ease- G tomake one more ot' this wheel No. et, which in turn governs wheel No. 1by an eccentric, showing one number on the dial of wheel No. 1.

To allow the car axle and wheel to lnake the proper number of rotationsto pass over the distance of one mile, which in this ease is six hundredand twenty and two-thirds, I make the case G with nineteen cogs onitsouter surface and rotate it by a worm placed on the axle, Fig. 12. Itrequires nineteen rotations ot' the car-wheel to give G one rotation,and 19 S23-:6202.

To give any required number of revolutions before showing one number onthe dial of wheel No. 1, all that is necessary is to change the numberof cogs on the wheel No. 4. and the case Gr.

The lid Il, FiO. 10, is riveted and hermetically sealed, and does notIallow of tampering.

To tell the distance a vehicle passes over in a certain time, the numberwhen it goes out is subtracted from the number when it comes in, and thedifference is what it has traveled.

Having thus described my invention, what I claim as new, and wish tosecure by Letters Patent, is-

1. An odometer or register the case of which is provided with internalgears, in which mesh wheels of a less number of gears, each wheel IOOIIO

IZO

IZS

and ratchets o', snbstantiallr as and for the purpose set forth.

3. In an odometer or register Substantially as described, thecombination of the wheel Ii, 15 dial d, and shoulders n n, as and forthe purpose set forth.

PATRICK ENEAS MCDONN ELL.

Witnesses:

PATRICK MGMANUS, LAURENCE WELTZEE;

controlling the next by'an eccentric having a slot or a shoulder, inwhich meshes a slot or a shoulder of the wheel rotating it,substantially as and for the purpose set forth.

2. In combination with an odometer or register the case of which isprovided with internal gears, in which mesh wheels of a less number ofgears, each wheel controlling the next by an eccentric having a slot ora shoulder, in which meshes a slot or ashoulder of the wheel rotatingit, the weighted eccentric e fw, pawl q,

